Guys:
I need some help.... I have a Hoss Machine X2 CNC conversion that I built in 2008. At that time I installed the stepper control system that ran with Mach 3. Unfortunately Mach 3 and I didn't get along very well... So the little X2 got stuffed into a corner and pretty much ignored... and forgotten.
Then I recently came across the Centroid Acorn controller board (
Acorn CNC controller, Step and Direction 4 axis CNC Control board with ethernet communication.DIY CNC kit). What a wonderful piece of engineering!! A "home shop" controller board that runs the same software that is utilized by the CNC industry! The board is designed and built by the same people that designed and programmed the operating software (Centroid CNC12), and it works with Windows 10, and touchscreen monitors. It's a
great system!
So as you've probably guessed, I dug out my dust covered X2 and brought it back to life. It's been a joy to use! Even having to learn the "conversational" features of the CNC12 software hasn't been too bad.
But I have run into a problem that I hope someone here can help me with. I need to adjust the backlash for my Z axis. I'm in the process of doing the ball screw backlash compensations for the X, Y, and Z axis. I've got X and Y dialed in now, but Zs' a problem. Mostly due to me not remembering how I built it 10 years ago, not remembering where I put the manual that Hoss Machine supplied 10 years ago, and not being able to contact Hoss Machine (I've emailed all of the addresses that I've been able to find for him, but so far, no response).
The Z axis has two bearings to provide smooth operation for the ball screw, and the sprocket drive. One bearing is under the mounting plate, and one is above, and the ball screw nuts are on the top and bottom of this assembly. The parts are secured with set screws, which I've removed, but I'm kinda lost at what to twist, or move in order to get the pieces to be "a little closer" together. Currently I've got about 4 "steps" worth of backlash before things actually move. And I just know (I think) that this can be "removed"... or at least minimized to a much smaller amount....
if I only remembered how the darn thing went together!
So anyone that has a moment, and can share that bit of arcane (and probably very simple) piece of knowledge will gain my undying gratitude, and heart felt appreciation!!
Thanks,
Chris D
Winters, CA